Safety gas-burner.



No. 808,825. PATENTED JAN. 2, 1906. S. W. EKROOS.

SAFETY GAS BURNER.

APPLICATION FILED No.1, 1904.

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No. 808,825. 'Y PATENTED JAN. 2, 1906.

S. W. EKROOS.

SAFETY GAS BURNER.

APPLICATION FILED DEO. l, 1904.

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FATFN SAFETY GAS-BURNER..

Speccation of Letters Patent.

Patented Jan. 2, 1906.

Application filed December 1, 1904. Serial No. 234,995.

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Be it known that I, SIGURD W. EKRoos, a subject of the King of Sweden and Norway, and a resident of the borough of Brooklyn, New York city, State of New York, have invented certain new and useful Improvements in Safety Gas-Burners, of which the follown ing is a specification.

My invention relates to means for automatically closing the gas-duct when the flame is blown out or otherwise unintentionally extinguished; and it consists of the improved coutrivances hereinafter described whereby such closure is eiected, reference being made to the accompanying drawings, in which-- Figure l is an elevation of the apparatus of my invention in one form of construction. Fig. 2 is an elevation of the same in a modied form of construction. Fig. 3 is a plan view of part of the apparatus of Fig. l with some of the parts in horizontal section. Fig. 4 is a longitudinal vertical section of the gaspipe and the gas-controlling valve and stopcock of Fig. l. Fig. 5 is a longitudinal vertical section of the gas-pipe and the gas-controlling valve and stop-cock of Fig. 2. Fig. Gis a plan view showing the application of my improved apparatus to a gas-stove burner.

A represents the gas-pipe having the burner Z and the gas-cock c, saidi pipe being preferably arranged in a horizontal position and the burner being applied atv some distance from the dead end CZ of the said pipe. In the gas-pipe in advance of the cock @and the burner Z is a valve-seat c, and in connection with this seat is a valve f. to close on said seat when the flame is unintentionally extinguished and stop the flow of gas while the cock remains open. rIhe said valve has a passage g g through it for allowing the gas to flow after being opened. Said valve is fitted to slide gas-tight in the pipe A and has a lever /t connected to one side through a slot t' of the pipe, said lever being fulcrumed at its opposite end to a support .7', carried by a standard Zt, set upright on the gas-pipe, said standard being in Figs. l, 3, and L between the slot Z and the burner Z. Below the fulcrum of this lever Z1, it is connected by a thermostatic rod Z, extending over the burner Z, so as to be heated by the gas-name, to a tension-post m, supported on the gas-pipe, saidvpost m, rod Z, and the valve being so related to the seat e that when the iiaine is not burning and the thermostatic rod is contracted said rod draws the valve onto the seat and stops the-flow of the gas.

A cam n is applied to the gas-cock above the pipe A, and athrust-rod o is arranged with relation to said cam and the lever ZL so that when the cock is turned to open the gas-duct and let on the gas the thrust of said rod o on said lever opens the valve, which allows the gas to flow to the burner and be ignited The cock is then held open a short time by the operator for allowing rod Z to expand, which then allows the valve f to remain open for continuation of the flame as long as required.

The gas-cock carries a bow-springp, which is tensioned by contact with a stud q when the cock is opened, so as to release the lcam n from thrust-rod o when the cock c is released by thc operator, and thus avoid obstruction to the closing of the valve byA tension of the contracting thermostatic rod Z when the flame is extinguished.

In Figs. 2 and 5 the valvef and its seat e are arranged between the burnerb and the cock 0, and the lever /z is fulcrurned at j" between its extremities. The thermostatic rod Z, supported on the standard m, is caused by the iiame to thrust on the upper arm of lever la for holding the valve f free from its seat c as long as the amc is ignited. To allow the valve to be'opened by the thrust-rod 0 and the cam n, on the cock c, the upper arm of lever /i is connected with the thermostatic rod Z by a loose joint, as shown in Fig. 2. A spring fr is employed in the dead end of the gas-pipe to close the valve when released by the contraction of the thermostatic rod Z. In both arrangements the cock is to be held open for a short time for allowing the.

expansion of the thermostatic rods as a condition permitting the open condition of the valves while the gas burns and as a condition insuring the closing of, the valves when the iiame is extinguished.

My improved apparatus is alike applicable to gas-stove burners, as I have represented in Fig. 6, where the gas-pipe A contains the valve, same as in the other figures, but not shown, because it is unnecessary to repeat it, said valve being in like manner connected to a le- Ver 7b2, having' its fulcrum atjz, to which lever a thermostatic rod Z2 is connected, which has connection at m2 with a fixed support, said rod passing over the burner Z2 for being heated, and the gas-cock c has a cam n', coacting with a like thrust-rod 02 for shifting the lever IOO 71.2 to open the valves, with a bow-spring p to release the cam from the thrust-rod. The gaspipe is closed at the dead end d and has a branch b2 communicating with the burner What I claim as my invention is l. The combination with the gas pipe, burner and gas-cock, of the valve located in the gas-pipe and at one side 'of the burner, means to open said valve and temporarily hold it open through the instrumentality of the gas-cock When the latter is opened, an exterior thermostat subject to the gas-llame and connected with the valve for maintaining the open condition of said valve While the flame continues, and means for automatically closing said valve When the flame is extinguished.

2. The combination with the gas pipe, burner, and gas-cock, of the valve located in the gas-pipe and at one side of the burner, means to open said valve and temporarily hold it open through the instrumentality of the gas-cock when the latter is opened, an exterior thermostat subject to the gas-flame and connected with the valve for maintaining the open condition of said valve While the flame continues, and a spring for automatically closing said valve When the llame is extinguished.

v3. The combination With the gas pipe, burner, and the gas-cock, of the valve located in the gas-pipe and at one side of the burner, an exterior thermostat subject to the gasame for maintaining the open condition of said valve While the llame continues, means to lopen said valve and temporarily hold it open through the instrumentality of the gas-cock when the latter is opened, and means for automatically closing said valve when the flame is extinguished, the said means for opening said valve and temporarily holding it open comprising the cam on the gas-cock, thrustrod, and the valve-opening lever Which is connected with the thermostat.

4. The combination with the gas pipe, burner and the gas-cock, o' the valve located in the gas-pipe and at one side of the burner, an exterior thermostat subject to the gas- 'lame for maintaining the open condition of said valve While the 'flame continues, means to open said valve and temporarily hold it open through the instrumentality ot' the gas-cock When the latter is opened, and means for automatically closing said valve when the flame is extinguished, the said means for opening said valve and temporarily holding it open comprising the cam on the gas-cock, thrustrod, and the valve-opening lever which is connected with the thermostat, and the spring for releasing the cam from the thrust-rod.

Signed at New York this 25th day of November, 1904. f

SIGURD W. EKROOS.

Vitn esses:

C. SEDGWICK, A. P. THAYER. 

